Normally, protein is not removed when the kidneys filter waste from the blood. However, when the kidneys are damaged, protein leaks through the damaged filters and is removed from the body in the urine, along with the waste products.
1. rucksack-a bag carried by a strap on your back or shoulder. back pack, backpack, haversack, knapsack, packsack. bag-a flexible container with a single opening; he stuffed his laundry into a large bag. kit bag, kitbag-a knapsack (usually for a soldier).ucksack. n. 1. a large bag, usually having two straps and a supporting frame, carried on the back and often used by climbers, campers, etc. US and Canadian name: backpack. [C19: from German, literally: back sack].
shuck. n. 1. (Biology) the outer covering of something, such as the husk of a grain of maize, a pea pod, or an oyster shell. vb (tr).2. to remove the shucks from.. a. To remove the husk or shell from: shuck corn. b. To open the shell of (a bivalve): shuck oysters. 2. Informal To cast off: shucked their coats and cooled off; a city trying to shuck a sooty image.